34 research outputs found
Amplitude-distance curves of P, S and L waves in Central Balkans for short and medium period seismographs
No full textThe basic principles for deriving the amplitude-distance curves or calibrating functions at short epicentral distances for the central part of the Balkan region are described. A procedure for unification of magnitude determinations for P, S and L waves is applied on the basis of the teleseismic surface wave magnitude scale. The results for short and medium period seismographs are presented.JCR Journalope
Amplitude-distance curves of P, S and L waves in Central Balkans for short and medium period seismographs
No full textThe basic principles for deriving the amplitude-distance curves or calibrating functions at short epicentral distances for the central part of the Balkan region are described. A procedure for unification of magnitude determinations for P, S and L waves is applied on the basis of the teleseismic surface wave magnitude scale. The results for short and medium period seismographs are presented
2. Construction of Amplitude Curves and Determination of Station Corrections for a Seismic Network Located in the Epicentral Area : Based on the data of Wakayama Micro-earthquake Observatory and its Sub-stations
No full text
Amplitude-distance curves of P, S and L waves in Central Balkans for short and medium period seismographs
No full textThe basic principles for deriving the amplitude-distance curves or calibrating functions at short epicentral distances for the central part of the Balkan region are described. A procedure for unification of magnitude determinations for P, S and L waves is applied on the basis of the teleseismic surface wave magnitude scale. The results for short and medium period seismographs are presented.</jats:p
Seismic hazard assessment for the Sofia area
No full textThe capital of Bulgaria, Sofia, is situated in the center of the so-called Sofia area. This is the most populated industrial and cultural region of Bulgaria that faces considerable earthquake risk. We apply a version of machine code EQRISK for hazard assessment of the Sofia area according to the Cornell-McGuire approach. The probabilistic seismic hazard analysis is based on a simplified seismogenic model, which is derived from seismic zoning of Bulgaria. We show, using a Monte Carlo approach, that uncertainties in seismic input have a relatively small effect on the PSHA output, especially when compared with uncertainties associated with the attenuation relationship. Our PSHA map shows that a 10–3 annual probability of the PGA exceeds 0.3 g in much of the Sofia areaJCR Journalope
“Spectral model ω2” and non-linear inner structure of the magnitude scale for body waves
No full textSeismic hazard assessment for the Sofia area
No full textThe capital of Bulgaria, Sofia, is situated in the center of the so-called Sofia area. This is the most populated industrial and cultural region of Bulgaria that faces considerable earthquake risk. We apply a version of machine code EQRISK for hazard assessment of the Sofia area according to the Cornell-McGuire approach. The probabilistic seismic hazard analysis is based on a simplified seismogenic model, which is derived from seismic zoning of Bulgaria. We show, using a Monte Carlo approach, that uncertainties in seismic input have a relatively small effect on the PSHA output, especially when compared with uncertainties associated with the attenuation relationship. Our PSHA map shows that a 103 annual probability of the PGA exceeds 0.3 g in much of the Sofia are
